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Finding the Fourth Proportional to 16,608.64, 22,919.84 and 9,156.64

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Solution

The fourth proportional to 16,608.64, 22,919.84 and 9,156.64 is: 12,636.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,608.64 : 22,919.84 = 9,156.64 : x
  2. Step 2: Convert to fraction form
    16,608.64/22,919.84 = 9,156.64/x
  3. Step 3: Cross multiply
    16,608.64x = 22,919.84 × 9,156.64
  4. Step 4: Simplify right side
    16,608.64x = 209,868,723.74
  5. Step 5: Solve for x
    x = 209,868,723.74/16,608.64
  6. Step 6: Final answer
    x = 12,636.12

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.